[求助]文件输入输出为什么显示不了？

yuerhb 发布于 2007-07-14 13:44， 863 次点击

我编了程序编译成功但是显示不出我输入的字符，为什么？请知道的好心告诉我
#include<stdio.h>
struct stu
{
int round[3];
int press[3];
float angle[3];
};
struct beng{
char type[12];
int num[4];
struct stu state;
}data[12],*pp,*qq;

main()

{

FILE *fp;

char ch;

int i;

pp=data;

if((fp=fopen("c:\\WIN-TC\\projects\\stu_list.txt","wb+"))==NULL)

{

printf("Cannot open file strike any key exit!");

getch();

exit(1);

}

printf("\ninput data\n");

for(i=0;i<2;i++,pp++)

{ scanf("%s",pp->type);

fwrite(pp,sizeof(struct beng),2,fp); }

fclose(fp);

if((fp=fopen("c:\\WIN-TC\\projects\\stu_list.txt","rb"))==NULL)

{

printf("Cannot open file strike any key exit!");

getch();

exit(1);

}

ch=fgetchar();
printf("%s",ch);

fclose(fp); getch();

}

[此贴子已经被作者于2007-7-14 14:14:26编辑过]

8 回复

yuerhb2007-07-14 14:19

我知道怎么回事了。。。。

yohji2007-07-14 20:58

1. main()不对
2. getch()是不可移植的
3. 你调用了exit()，却没包含stdlib.h

yuerhb2007-07-16 11:06

谢谢啊，但是我是仿照的课本的形式
/*#include<stdio.h>
struct stu
{
char name[10];
int num;
int age;
char addr[15];
}boya[2],boyb[2],*pp,*qq;
main()
{
FILE *fp;
char ch;
int i;
pp=boya;
qq=boyb;
if((fp=fopen("stu_list","wb+"))==NULL)
{
printf("Cannot open file strike any key exit!");
getch();
exit(1);
}
printf("\ninput data\n");
for(i=0;i<2;i++,pp++)
scanf("%s%d%d%s",pp->name,&pp->num,&pp->age,pp->addr);
pp=boya;
fwrite(pp,sizeof(struct stu),2,fp);
rewind(fp);
fread(qq,sizeof(struct stu),2,fp);
printf("\n\nname\tnumber age addr\n");
for(i=0;i<2;i++,qq++)
printf("%s\t%5d%7d%s\n",qq->name,qq->num,qq->age,qq->addr);
fclose(fp);
} */

yuerhb2007-07-16 11:10

我照课本例子编的哦
/*#include<stdio.h>
struct stu
{
char name[10];
int num;
int age;
char addr[15];
}boya[2],boyb[2],*pp,*qq;
main()
{
FILE *fp;
char ch;
int i;
pp=boya;
qq=boyb;
if((fp=fopen("stu_list","wb+"))==NULL)
{
printf("Cannot open file strike any key exit!");
getch();
exit(1);
}
printf("\ninput data\n");
for(i=0;i<2;i++,pp++)
scanf("%s%d%d%s",pp->name,&pp->num,&pp->age,pp->addr);
pp=boya;
fwrite(pp,sizeof(struct stu),2,fp);
rewind(fp);
fread(qq,sizeof(struct stu),2,fp);
printf("\n\nname\tnumber age addr\n");
for(i=0;i<2;i++,qq++)
printf("%s\t%5d%7d%s\n",qq->name,qq->num,qq->age,qq->addr);
fclose(fp);
} */

yuerhb2007-07-16 11:11

yuerhb2007-07-16 11:12

我是照课本例子编的哦
#include<stdio.h>
struct stu
{
char name[10];
int num;
int age;
char addr[15];
}boya[2],boyb[2],*pp,*qq;
main()
{
FILE *fp;
char ch;
int i;
pp=boya;
qq=boyb;
if((fp=fopen("stu_list","wb+"))==NULL)
{
printf("Cannot open file strike any key exit!");
getch();
exit(1);
}
printf("\ninput data\n");
for(i=0;i<2;i++,pp++)
scanf("%s%d%d%s",pp->name,&pp->num,&pp->age,pp->addr);
pp=boya;
fwrite(pp,sizeof(struct stu),2,fp);
rewind(fp);
fread(qq,sizeof(struct stu),2,fp);
printf("\n\nname\tnumber age addr\n");
for(i=0;i<2;i++,qq++)
printf("%s\t%5d%7d%s\n",qq->name,qq->num,qq->age,qq->addr);
fclose(fp);
}

yuerhb2007-07-16 11:13

怎么回事？我尚未。。。审核。。是什么意思，我怎么回复不了